Define dielectric strength for a capacitor.

Define dielectric strength for a capacitor.
by

1 Answer

Answer :

Ans: Di-electric Strength for a capacitor: The voltage which a dielectric material can withstand without breaking down (without losing its dielectric property) is called as dielectric strength.
by

Related questions

Define breakdown voltage and dielectric strength of a capacitor.

Description : Define breakdown voltage and dielectric strength of a capacitor.

Last Answer : Breakdown Voltage: The voltage at which the dielectric material breaks down (Starts conducting or is no longer remains as an insulator) for a specified thickness, is called its breakdown ... without breaking down (without losing its dielectric property) is called its dielectric strength. 

Define : (i) Dielectric strength (ii) Breakdown voltage

Description : Define : (i) Dielectric strength (ii) Breakdown voltage

Last Answer : (i) Dielectric strength: The voltage which a dielectric material can withstand without breaking down (without losing its dielectric property) is called its dielectric strength. It is represented by kV/mm ... or is no longer an insulator) for a specified thickness, is its breakdown voltage. 

With the help of which bridge are the capacitance and dielectric loss of a capacitor generally measured ?

Description : With the help of which bridge are the capacitance and dielectric loss of a capacitor generally measured ?

Last Answer : With the help of Schering bridge are the capacitance and dielectric loss of a capacitor generally measured.

Define dielectric strength.

Description : Define dielectric strength.

Last Answer : The ability of the insulation material to withstand potential difference.

Define Dielectric Strength for transformer oil. State its value for new transformer oil.

Description : Define Dielectric Strength for transformer oil. State its value for new transformer oil.

Last Answer : Dielectric strength is defined as the maximum voltage that can be applied to across to the Fulid with out electrical breakdown is called Dielectric strength.

A dielectric slab of thickness `d` is inserted in a parallel plate capacitor whose negative plate is at `x = 0` and positive plate is at `x = 3d`. The

Description : A dielectric slab of thickness `d` is inserted in a parallel plate capacitor whose negative plate is at `x = 0` and positive plate is at `x = 3d`. The

Last Answer : A dielectric slab of thickness `d` is inserted in a parallel plate capacitor whose negative plate ... at fist, then decreases and again increase.

insulator which is placed between 2 plates of capacitor isA. electric B. dielectric C. inductor D. resistor

Description : insulator which is placed between 2 plates of capacitor isA. electric B. dielectric C. inductor D. resistor

Last Answer : dielectric

What is the term used to refer to the losses which can be traced to the dielectric of a capacitor?

Description : What is the term used to refer to the losses which can be traced to the dielectric of a capacitor?

Last Answer : Power losses.

What is dielectric material? Enlist dielectric material used in capacitor.

Description : What is dielectric material? Enlist dielectric material used in capacitor.

Last Answer : A dielectric material is an electrical insulator that can be polarized by an applied electric field. Dielectric materials used in capacitor: porcelain (ceramic), mica, glass, plastics, and the oxides of various metals

An air dielectric is replaced with a glass dielectric inside a capacitor of fixed dimensions. Relatively speaking, what will happen to the quantity of charge the capacitor can hold after the glass is inserted?

Description : An air dielectric is replaced with a glass dielectric inside a capacitor of fixed dimensions. Relatively speaking, what will happen to the quantity of charge the capacitor can hold after the glass is inserted?

Last Answer : ANSWER: IT IS INCREASED WITH THE GLASS DIELECTRIC

Dielectric loss in a capacitor is best measured by

Description : Dielectric loss in a capacitor is best measured by (A) Wien Bridge (B) Schering Bridge (C) Anderson Bridge (D) Heaviside-Campbell Equal Ratio Bridge

Last Answer : Dielectric loss in a capacitor is best measured by Schering Bridge

A dielectric material is placed in between the plates of a capacitor, it

Last Answer : A dielectric material is placed in between the plates of a capacitor, it Increases the capacitance.

What is dielectric strength of an insulating material? What is its unit?

Description : What is dielectric strength of an insulating material? What is its unit?

Last Answer : Dielectric Strength: The dielectric strength of an insulating material is the maximum voltage which the insulating medium can withstand without breakdown. Unit is volts per millimeter (V/mm), or kV/mm or kV/cm

For an insulating material, dielectric strength and dielectric loss should be respectively

Description : For an insulating material, dielectric strength and dielectric loss should be respectively   (A) high and high (B) low and high (C) high and low (D) low and low.

Last Answer : For an insulating material, dielectric strength and dielectric loss should be respectively  high and low 

The dielectric strength of impregnated papers is about

Description : The dielectric strength of impregnated papers is about   (a) 20 kV/mm (b) 30 kV/mm (c) 15 kV/mm (d) 5 kV/mm 

Last Answer : The dielectric strength of impregnated papers is about 30 kV/mm

Why is the dielectric strength of vacuum infinite?

Description : Why is the dielectric strength of vacuum infinite?

Last Answer : The dielectric strength of vacuum is infinite because there isno molecule in the vacuum.

Emulsifier protection is associated with: a) Grounding protection b) Dielectric strength protection of cables and conductors c) Lightning protection d) Fire protection

Description : Emulsifier protection is associated with: a) Grounding protection b) Dielectric strength protection of cables and conductors c) Lightning protection d) Fire protection

Last Answer : Ans: D

The removal of paint from electrical equipment, such as generators, should be cautiously undertaken because ____________. A. the mechanical shock of paint removal lessens the dielectric strength of the insulation B. the paint dust is composed of abrasive and semi-conducting materials which impair insulation C. paint dust buildup has a tendency to cause corrosion D. phase windings frequently become isolated from each other due to dust interference at the terminals

Description : The removal of paint from electrical equipment, such as generators, should be cautiously undertaken because ____________. A. the mechanical shock of paint removal lessens the dielectric strength ... phase windings frequently become isolated from each other due to dust interference at the terminals

Last Answer : Answer: B

Which of the listed conditions could indicate the need for cleaning electrical insulation? A. Low ambient temperature B. Low operating temperature C. High dielectric strength D. Low megger readings

Description : Which of the listed conditions could indicate the need for cleaning electrical insulation? A. Low ambient temperature B. Low operating temperature C. High dielectric strength D. Low megger readings

Last Answer : Answer: D

The dielectric strength of a vacuum or dry air is approximately ________________. A. 450 volts/inch B. 1000 volts/inch C. 20-kv/inch D. 50-kv/inch

Description : The dielectric strength of a vacuum or dry air is approximately ________________. A. 450 volts/inch B. 1000 volts/inch C. 20-kv/inch D. 50-kv/inch

Last Answer : Answer: C

A megohmmeter is used to measure _____________. A. voltage B. dielectric strength C. current D. power

Description : A megohmmeter is used to measure _____________. A. voltage B. dielectric strength C. current D. power

Last Answer : Answer: B

When using a megohmmeter to test the dielectric strength of wire insulation, a continuous series of slight downscale kicks by the pointer is result of ____________. A. good insulation B. the leakage of current along the surface of dirty insulation C. the capacitance of the windings D. the dielectric-absorption effect of the insulation

Description : When using a megohmmeter to test the dielectric strength of wire insulation, a continuous series of slight downscale kicks by the pointer is result of ____________. A. good insulation B. the ... dirty insulation C. the capacitance of the windings D. the dielectric-absorption effect of the insulation

Last Answer : Answer: B

When a megohmmeter is used to test the dielectric strength of wire insulation, the initial dip of the pointer toward 'zero' is caused by _____________. A. good insulation B. the leakage of current along the surface of dirty insulation C. the capacitance of the circuit D. the dielectric absorption effect of the insulation

Description : When a megohmmeter is used to test the dielectric strength of wire insulation, the initial dip of the pointer toward 'zero' is caused by _____________. A. good insulation B. the leakage of ... of dirty insulation C. the capacitance of the circuit D. the dielectric absorption effect of the insulation

Last Answer : Answer: C

Which of the following statements about copper wire sized by the AWG rating is correct? A. Number 12 AWG wire has a higher current rating than number 10 AWG wire. B. Number 10 AWG wire has a higher dielectric strength than number 12 AWG wire. C. Number 12 AWG wire is larger than Number 10 AWG wire. D. Number 12 AWG wire at 25°C has more resistance per 1000 feet than No. 10 AWG wire at 25°C.

Description : Which of the following statements about copper wire sized by the AWG rating is correct? A. Number 12 AWG wire has a higher current rating than number 10 AWG wire. B. Number 10 AWG wire has a higher ... Number 12 AWG wire at 25°C has more resistance per 1000 feet than No. 10 AWG wire at 25°C.

Last Answer : Answer: D

Which of the following statements concerning copper wire sized by AWG numbers is correct? A. Number 12 AWG wire has a higher current rating than 10 AWG wire. B. Number 12 AWG wire at 25°C has more resistance per 1000 ft than 10 AWG wire at 25°C. C. Number 10 AWG wire has a higher dielectric strength than 12 AWG wire. D. Number 12 AWG wire is larger than number 10 AWG wire.

Description : Which of the following statements concerning copper wire sized by AWG numbers is correct? A. Number 12 AWG wire has a higher current rating than 10 AWG wire. B. Number 12 AWG wire at 25°C has more ... dielectric strength than 12 AWG wire. D. Number 12 AWG wire is larger than number 10 AWG wire.

Last Answer : Answer: B

Which of the following tests is not done for transformer oil? (A) Flash point and acid value (B) Aniline point (C) Dielectric strength (D) Copper strip corrosion test

Description : Which of the following tests is not done for transformer oil? (A) Flash point and acid value (B) Aniline point (C) Dielectric strength (D) Copper strip corrosion test

Last Answer : (B) Aniline poin

Dielectric strength of a material is (A) Its energy storage capacity (B) A magnetic property (C) Its capacity to resist the flow of current(D) Its capacity to withstand high voltage

Description : Dielectric strength of a material is (A) Its energy storage capacity (B) A magnetic property (C) Its capacity to resist the flow of current (D) Its capacity to withstand high voltage

Last Answer : (D) Its capacity to withstand high voltage

What is meant by Dielectric strength?

Description : What is meant by Dielectric strength? 

Last Answer : The maximum electrical potential gradient that a material can withstand without rupture usually specified in volts/millimeter of thickness. This also has known as electric strength. 

The insulating material should have (a) low permittivity (b) high resistivity (c) high dielectric strength (d) all of the above

Description : The insulating material should have (a) low permittivity (b) high resistivity (c) high dielectric strength (d) all of the above

Last Answer : (d) all of the above

If a cable of homogeneous insulation has a maximum stress of 10 kV/mm, then the dielectric strength of insulation should be (a) 5 kV/mm (b) 10 kV/mm (a) 15 kV/mm (d) 30 kV/mm

Description : If a cable of homogeneous insulation has a maximum stress of 10 kV/mm, then the dielectric strength of insulation should be (a) 5 kV/mm (b) 10 kV/mm (a) 15 kV/mm (d) 30 kV/mm

Last Answer : (b) 10 kV/mm

Dielectric strength of rubber is around (a) 5 kV/mm (b) 15 kV/mm (c) 30 kV/mm (d) 200 kV/mm

Description : Dielectric strength of rubber is around (a) 5 kV/mm (b) 15 kV/mm (c) 30 kV/mm (d) 200 kV/mm

Last Answer : (c) 30 kV/mm

The insulating material for a cable should have (a) low cost (b) high dielectric strength (c) high mechanical strength (d) all of the above

Description : The insulating material for a cable should have (a) low cost (b) high dielectric strength (c) high mechanical strength (d) all of the above

Last Answer : (d) all of the above

How is the dielectric strength of an insulator determined?

Description : How is the dielectric strength of an insulator determined?

Last Answer : By raising the voltage on a test sample until it breaks down.

63 The dielectric strength of transformer oil is expected to be A. 1kV B. 33kV C. 100kV D. 330 kV

Description : 63 The dielectric strength of transformer oil is expected to be A. 1kV B. 33kV C. 100kV D. 330 kV

Last Answer : B. 33kv

The dielectric strength of transformer oil should be (A) 100 V. (B) 5 KV. (C) 30 KV. (D) 132 KV.

Description : The dielectric strength of transformer oil should be (A) 100 V. (B) 5 KV. (C) 30 KV. (D) 132 KV.

Last Answer : (C) 30 KV.

Describe dielectric strength of material.

Description : Describe dielectric strength of material.  

Last Answer : Dielectric strength of material: Dielectric strength is the ability of a dielectric material of specified thickness to withstand at high voltage without breaking down. It is a measure of the strength of ... strength can withstand at high voltage. It is expressed in the unit of kV/cm.

Dielectric Constant and Dielectric Strength are

Last Answer : Dielectric Constant and Dielectric Strength are same.

The dielectric strength of transformer oil is expected to be?

Description : The dielectric strength of transformer oil is expected to be?

Last Answer : The dielectric strength of transformer oil is expected to be 33 kV.

Define the following: i) Melting point i) Specific heat iii) Heat capacity iv) Dielectric constant.

Description : Define the following: i) Melting point i) Specific heat iii) Heat capacity iv) Dielectric constant.

Last Answer : Definition: i) Melting point - The melting point of a material is the temperature at which it changes state from solid to liquid at normal atmospheric pressure. The temperature at which a solid ... It is an amount measuring the ability of a material to store electrical in an electric field.

Define dielectric failure of electrical insulating material.

Description : Define dielectric failure of electrical insulating material. 

Last Answer : Definition of dielectric failure of electrical insulating material. In the insulating material if the applied voltage is increased gradually then for certain value insulation will break down, ... material vanishes its insulating properties and starts conducting, also known as dielectric failure.

State failure phenomena observed in insulating material. State four reasons for failure of gaseous and solid dielectric materials.

Description : State failure phenomena observed in insulating material. State four reasons for failure of gaseous and solid dielectric materials. 

Last Answer : Failure phenomena in insulating material means the dielectric property fails :  The dielectric failure mean the dielectric strength of insulating material reduces due to high voltages or high ... 6. Due to poor maintenance of insulating material there may be possibility dielectric failure 

Write one application for the give dielectric material. (i) Polyvinyl Carbide(PVC) (ii) Glass (iii) Mica (iv) Cotton and Silk

Description : Write one application for the give dielectric material. (i) Polyvinyl Carbide(PVC) (ii) Glass (iii) Mica (iv) Cotton and Silk

Last Answer : (i) Polyvinyl Carbide(PVC):it is used in insulation of wires and cables in domestic wiring as well as in aircraft and factory wiring (any one)  (ii) Glass: 1) Alkaline glasses are used for ... with wax or varnishes are used in windings of magnet coils and small medium sized mechanics (any one) 

State any four dielectric materials.

Description : State any four dielectric materials.

Last Answer : Ceramics, distilled water, paper, mica, polyethylene, and glass. Metal oxides

Absorbed moisture contents affect the dielectric strength________.

Description : Absorbed moisture contents affect the dielectric strength________.

Last Answer : indirectly 

The presence of alkali oxides in alumino silicate ceramics is likely to result in dielectric breakdown due to

Description : The presence of alkali oxides in alumino silicate ceramics is likely to result in dielectric breakdown due to   (A) Polarization (B) Conductivity (C) Structural homogeneties (D) Ionization

Last Answer : The presence of alkali oxides in alumino silicate ceramics is likely to result in dielectric breakdown due to Conductivity 

The power factor of dielectric :

Description : The power factor of dielectric :  (A) is a function of temperature of the dielectric only (B) depends only on voltage stress to which the dielectric is stressed (C) always constant (D) both (A) and (B)

Last Answer : The power factor of dielectric :  (A) is a function of temperature of the dielectric only (B) depends only on voltage stress to which the dielectric is stressed (C) always constant (D) both (A) and (B)

The imaginary part of dielectric constant determines

Description : The imaginary part of dielectric constant determines (a) Component of current which is in phase with the applied field (b) Component of energy absorbed per m3 (c) Amount of applied field (d) Component of voltage which is in phase with the applied field

Last Answer : The imaginary part of dielectric constant determines Component of current which is in phase with the applied field

The depth of penetration of a wave in a lossy dielectric medium increases with

Description : The depth of penetration of a wave in a lossy dielectric medium increases with 

Last Answer : The depth of penetration of a wave in a lossy dielectric medium increases with Increasing wavelength

The measurement of dielectric loss and power factor is done using...

Description : The measurement of dielectric loss and power factor is done using  (A) Weins Bridge (B) Hays Bridge (C) Schering Bridge (D) Wheat Stone Bridge 

Last Answer : C Schering brigde

For making capacitors, it is better to select a dielectric having_________.

Description : For making capacitors, it is better to select a dielectric having_________.

Last Answer : For making capacitors, it is better to select a dielectric having high permittivity.